Generic WLAN Router Selection Help

This is just a generic question and I noticed most of the discussion groups were more focused but hopefully someone can answer my question here. I was pointed to some Cisco products since after speaking with Linksys and a few other manufacturers that their standard routers cannot supply enough WiFi connections for my needs. I'm looking at supplying ~150-200 wireless connections in a generic office environment. This building will be for contracted rent/lease and mostly standard internet/LAN connections. Basically, I'm just wondering which product would best suit my needs. I'm doing my own looking so far but your help would definitely speed up my job.